const SYSTEM_INFO = uni.getSystemInfoSync();		// 同步获取设备系统信息
export const getStatusBarHeight = ()=> SYSTEM_INFO.statusBarHeight || 15;

export const getTitleBarHeight = ()=>{
	if(uni.getMenuButtonBoundingClientRect){
		const {top,height} = uni.getMenuButtonBoundingClientRect();
		return height + (top - getStatusBarHeight())*2;
	}else{
		return 40
	}
}


export const  getNavBarHeight = ()=> getStatusBarHeight()+getTitleBarHeight();

